Method and device for transporting wires



26, 1938. c. KoRvER METHOD'VANDEDEYVICE FOR TRANSPORTING WYIRES FiledApril 25, 1955 fi 66 J0 T23,

55 l (mais zo a: 15 :if:

Patented Apr. 26,7 1938 r I I UNITED STATES Nrn-:NTA OFFICE ./1 CornelisKorver, Eindhoven, Netherlands, assignor to N. V. Philips'Gloeilnmpenfabrieken.

Eindhoven, Netherlands Application April 28. 1935, Serial No. 18,457 .InGermany May 18, 1934 11 Claims. V(Cl, 22,6-l9) My invention relates to amethod and device cient internal strain to assume the desired curlfortransporting wires, and more particularly for lng upon entering thespace, and topermanently transporting wires having small mechanicalretain such curling. In case the wire has insufstrength. 1 ilcientinternal strains to assume such curling 5 My invention is particularlywell adapted for the required internal strains may be imparted 5introducing a thinwire illling into ilash lamps thereto before it iscarried into the limited space, of the type described in the copendingU. S. apfor instance by drawing the wireover'an angular plication of vanLiempt Ser. No. r123,008, led

April 28, 1934, and will be described in connec- Ashas been statedabove, the invention is partion with such lamps; however, its use is notticularly well adapted for placing a fine filling 10 limited thereto.within ilash lamps. Flash lamps manufactured It is very difficult, ifnot impossible to transin accordance with the'invention have the import,for example through a tube, a, wire having portant advantage that thecombustion is so a small absolute mechanical strength, for incompletethat a maximum yield of actinic light l5 stance a tensile strength of 40grams or less, by is insured. Due to such complete combustion the 15means of a pressing or pushing action and withobjectionable phenomenonof molten unburned out the use of a drawing or pulling action. metalparticles being thrown against the wall of However, there are manyinstances in which it the bulb and causing bursting of the bulb, whichis desired to transport or carry such a wire and frequently occurs inthe case of incomplete comm in which the conditions are such as torender it bustion, is also avgided, 2

' impossible to use a drawing action. In such in- To obtain completecombustion 1n prior art stances a pressing or pushing action has t0 belamps, a large excess or oxygen was used; i. e. used- For example, whenit 1s desired to provide greatly more than theoretically required; indash a hollow body with a iilling of a fragile wire. lamps manufacturedaccording to thelnve'ntion and more particularly when it is requiredthat the the provision of much excess oxygen is unneces- 25 W'ue bedistributed unuoruuy Within Such u muy sary, and therefore acomparatively low-pressure a pushing or pressing action is required. gasmung can be used"y This has the further ad- In accordance with thepresent invention the vantage that the danger of the bulb burstingtransportation of a w'lre of small absolute dnl-.ing the combustion isalso eliminated.

Strength into u uuuted space is eueuteu by The ilash lamps manufacturedin accordance 30 means of a gaseous medium which medium carwith theinvention have a very short .nash ries the Wire along with t-Furtuermore the time, for instance 1/40 sec. or even less. and Wu'e 5carried cau be distributed with great uni also a very short contacttime", for instance 1/25 formity and in a curled state withinthe'limited se in addltionlthe Hash lamps made in M Space. 35

By. wires as used herein is meant not onlyrgalepwgotluognintgoyblnrffrs? metal wires, but also glass wires,artificial silk time, and Contact time., 'Wires and the uke' 'rn term"contact unie" is to be understood In addition to transporting the Wirethe gas to meean the lapse of time between the instant at d as carryingmeans also has a straightening 40 4o use which current is supplied tothe bulb and the inzfts; 4:sie :s sazfsazszluzssr ses a who the of etravel such as the wire touching the inner sur- 31u5- Claims directed tohollow bodies and flashlight face of the tube through w'hich it is beingtrans lamps produced in accordance with the method of ported.

y esnlts are obtained when the present invention are made 1n mycopending Particularly gd r application ser. No. 91,003, sied July 16,1936.

the incoherent medium is it; guion opens into the limited In Order thatthe invention may be clearly space and in which the tube openings forthe inlet understood and readily carried into eiect, it will 0 of thewire and of the gas are so located and be described more fully withreference to the 50 dimensioncd with respect to its outlet openingaccompanying drawing, in which,

into the limited space, that the rate of ow of Fig. 1 is a partlysectionized side view of a dethe medium is reduced upon entering thislimited vice suitable for carrying out the invention, and

space. showing a ilash lamp bulb being illled with ine As a rule. auchthin wires inherently have sufwire; v,

` Fig. 2 is a sectioniaed view of Fig. l taken on the line I-I of Fig.1:

Figisaviewofatinishediiashlamphaving a wire filling placed therein.

Referring to Figs. l and 2, a flash lamp bulb I having a glass envelopecomprising a neck portion II, is arranged with its neck portionextending over a portion of a guide tube l. The bulb is shown in theprocess of being filled with a thin wire 2, having an absolute tensilestrength of about 25 grams; the wire passing through the guide tube l.The guide tube I is formed on its end removed from the bulb. with asmall funnelshaped aperture I and on its other end with a portion i ofenlarged diameter, and is also provided with an extension Il throughwhich enters the incoherent medium, for instance compressed Thecompressed air ows in a direction indicated by the arrows I2 from asource of supply (notshown) through an' inlet l' to a control valve V(see Fig. 2), later to be more fully described, throughvthe valve V andtubes 5 and into the guide tube l.

In starting the operation of placing the wire into the bulbl a shortend-portion of the wire 2 is rst treated to remove any internal strainsand consequentlyvto eliminate any tendency of this portion to coil; thisbeing done, for example, by heating the wire, -for instance in the caseof magnesium wire. by annealing the portion of the wire at a temperatureof from 300 to 400 C. for about ve seconds. 'Ihe wire portion so treatedis thenled through the aperture 'I to extend a short distance into theguide tube l so that, upon admittance of the incoherent medium, the wire2 will be transported along the tube and into the bulb I.

The construction of aperture I causes substantially the entirecompressed air stream to flow towards the bulb I and then to pass to.the outside along the space formed between the tube I and the neckportion II, as indicated by the arrows. 'Ihe compressed air flowsthrough the tube I with considerable velocity and causes the wire 2 tobe carried into the bulb, and at the same time tends to straighten thewire while in the tube l. As a result the feeding of the wire into thebulb wilLtake place in a continuous, uninterrupted operation without theformation of wire pellets within the tube l. caused by friction due tothe wire coming into contact with the tube wail.

Due to the tube being enlarged at B, the velocity ofthe compressed airin tube portion i is greatly reduced, which causes the wire 2 to assumeits natural curling and to uniformly ll up the bulb I.

The supply of wire `2 and the control of the flow of the compressed airto tube I takes place by means of a device A; the parts of which aremounted on a'common base plate 2i. The device A consists of a bearingblock I9, secured to the base plate 2| by means of four screws I9' andsupporting a shaft Il, which shaft is xedly secured to block I9 by a setscrew 2II. Rotatably mounted upon the shaft Il is a pulley I4 having twoV-shaped grooves 10--1I groove 1II serving to drive the pulley by meansof a belt from a driving source (not shown), for example from anelectric motor, and the groove 1I serving for a Purpose later to bedescribed.

The pulley il is provided on one side with a boss 65, acting as abearing` against the block I 9, and on its other side with a counterborecausing the disc Q/b containing a thrust bearing I0. Secured to one sideof the pulley is a friction ring I8, for a purpose later to bedescribed. The pulley Il is Y continuously rotated during the operationof the evice.

Rotatably and slidably mounted on the shaft Il is a bushing 8 havingfixedly secured at one end, by means of a pin 66, a flanged disc-9.Arranged on the bushing 8 so as to move therewith-and with the ange 9-isa spool 1 upon which is wound a supply of the wire 2.

Secured to the base plate 2| by screws 61 is an angle bracket 68 havingsecured to its upstanding leg, a pad III of friction material. In theposition shown the disc 9 is forced against the pad Il by a compressionspring i1 acting through the thrust bearing I6 upon the pulley il, thusushing 8, and reel 1 to remain at rest.

Arranged with a free fit over bushing 0 and bearing with one sidethrough a thrust bearing I5 upon the side of spool 1, is one end 22' ofan arm 22 whose other end is iixedly secured by means of a pin 1I to arod 23 carrying at one end a push button 24.

The rod 23 is suitably guided so as to have 'axial movementas indicatedby the doubleheaded arrow-by two projections iii-5I of a supportingbracket II, which bracket is secured to the base plate 2| by means ofscrews 80. 'Ihe projection 5I also serves as the valve V, which controlsthe iiow of compressed air to the tube I and for this purpose isprovided with passageways 26 and 26' through which may flow thecompressed air.

'Ihe rod 23 is provided with a portion 25 of reduced diameter, which,when the rod is in the position shown by the dotted lines, connects thepassageways 28 and 26', and thus permits the flow of air. In theposition shown the rod 23 intercepts the passageways 26-26', and thusprevents the flow of air.

Upon movement of the push button ZI-and rod 2Iin the directionindicatcdby the arrow 15, the end 22' of arm 22, acting through thrust bearingI5, moves the reel 1-together with the bushing l and disc' Q-against thecompression of spring I1. If the push button is moved into the positionindicated by the dotted lines, flange" 9 will assume the position shownin dotted lines with its surface in contactwith the friction ring Il.Thus iiange s-together with the bushing I and reel 1wilI` be driven byand rotate with the pulley Il. This movement of the push button 24-andthe rod 22-also brings the reduced portion 2l into augment with thepassageways '26 and 2i' and interconnects same to permit the ilow ofcompressed air to the tube 4. The reduced portion 25 is so located onthe rod 23 that the interconnection of passageways 26 and 2li', and thusthe flow of air. takes place 'before the flange 9 contacts with thefriction ring I8; i. e., before the reel 1 rotates and the supplying ofthe wire 2 begins.

Secured to the base plate 2| ,'by screws 9i is a supporting block 30having rotatably mounted thereon a shaft 29. Fixedly secured to theshaft 29y by a pin 92 is a grooved pulley 21, which pulley. togetherwith the shaft 29, is driven by a belt SS-indicated by a dot-dashline-from the groove 1I of pulley Il. Secured to a reduced portion 56oi' shaft 2! by means of a nut II is a drum 2l having a surface 28',over which is drawn the wire 2.

The drum 28 is so driven from the pulley Il conditions, when usingcompressed air at an that the peripheral speed of the surface 2l' isgreater-for instance 10% to 15% greater-than the greatest speed at`whichthe wireleav the reell. Duetothisincreasedspeedthereisa certain amountof sliding friction between the wire 2 and the surface 2l', which keepsthe wire portion between thedrum 2l and reel 'I under purpose a device Cis provided.

'Ihe device C consists ofa rod 3l having a di-V ametrical andaxially-extending slot 32 (see Fig. i) through which passes the wire2;'the rod 34 being supported by a bracket Il secured to the base plate2I. 'Ihe rod Il is supported so as to be adjustable about its axis andadapted to be,

secured in the desired position by means'of a set screw il. 'I'hus therod 3l .can be secured in the desired position with the slot 32 at thecorrect angles to give the wire the desired amount of curling power.

With the push button 2l pushed in, both the wire and the compressed airis being supplied to the tube 4 and the bulb becomes filled with thewire.

After the bulb I has been filled with the desired length of wire, thepush button 2l is released and the disc 9 is disconnected from thefriction disc I8 by the spring I'I and is immediately placed intocontact with the friction-pad I Il, which stops the movement of the reel'I and the supplying of wire to the tube I. Such releasing ofl the pushbutton also causes the rod 23 to interrupt communication between thepassageways 26 and 26', and thus interrupts the -supply of compressedair. Due to the disposition of the portion 25 on the rod 423, the supplyof air continues until after the reel 1 has come to rest. Subsequentlythe bulb I is moved to the right and the wire is severed by means of asuitable cutter, indicated by II.

Various factors influence the operation, for

instance, the peripheral speed of the reel 1 the internal diameter andlength of tube 4: the speed of the compressed air through' the tube; thediameter and length of .the end portion 8; as

well as the sizes of the bulb and of the neck external diameter of about55 mm., 10 meters of portion II. These factors have to be selected withregard to the specic properties of the parti'cular wire used in orderthat there be no bunching or bundling of the wire while filling; i. e.that the density of' the filling be substantially equal throughout thebulb, and in addition, that the wire-filling elastically bears againstthe bulb wall and is immovable within the bulb.

For'example, in the case of a speclilc flash lamp having a content ofabout 100 c. c. and an wire having a diameter of 35 microns and conthetube about 1.9 mm.; and the widened por--k tion l a diameter of about 13mm. Under these over-pressure of two atmospheres, the wire moves attherateofaboutlxueterpersecond.v v

A 'flash lamp filled in this manner'is illustrated in 3 and comprises abulb Il containing a wire filling Il Aof theabove-mentioned material.'Ihe flash lamp Is provided with the two terminal wires 31-41 connectedwith one end to the terminals of base Il and carrying at theirother'en'ds nection with specific examples, and in specificapplications, I do not wish to be limited thereto,

but desire the appended claims to be construed as broadly as permissiblein view oi the prior art.

What I claim is: 1. A method of introducing into a limited space aninternally-strained wire of small mechanical strengthfcomprising thesteps, transporting the wire into'the space by a stream of gas, and dis-Y trihuting the wire in a curled condition and as uniformly as possiblethroughout the space by the flow of gas therein.

, 2. A method of uniformly filling a hollow body closed except for asingle aperture, with an in- ,ternally-strained wire of small mechanicalstrength, comprising the steps of carrying the wire through the apertureand into the hollow by a.' stream of gas leaving through another portionof the aperture, and distributing the wire in a curled condition and asuniformly as possible within the hollow by the recurrent ow of the gastherein.

3. A method of introducing into a limited space an internally-,strainedwire having a perimeter of less than 300 microns, comprising the steps,transporting the wire into the space by a stream of gas, anddistributing the wire in a curled condition and as uniformly as possiblewithin the limited space by the recurrent flow of gas therein.

4. A method of introducing a fragile wire into a limited space,comprising the steps, imparting internal strains to the wire,transporting the strained wire in to' the space by means Vof a stream ofgas, and distributing the wire in a curled condition.v and as uniformlyas possible within the limited space -by the recurrent flow of gastherein.

5. A method of uniformly filling a flash lamp bulb with aninternally-strained wire which is combustible with the emission ofstrong actinic light, comprising the steps, transporting thewire intothe hollow of the bulb through a single opening by means of a stream ofgas, and distributing the Iwire in a curled condition and as uniformlyas possible within the hollow of the bulb by the recurrent flow of thegas therein.

6. Amethod of uniformly filling a hollow containerhaving a singleaperture with an internally-strained fragile wire, comprising the.steps, introducing by means of a stream of a gas the wire through theaperture and into the hollow of the container, and luniformlydistributing the wire in a coiled condition within the hollow by meansof the recurrent iiow of the gas therein.

7. A method of introducing a fragile wire into a limited space,comprising the steps, introduce" ing the wire intoa tube emptying intosaid space, n

.tube toward the outlet opening, and means to `supply the wire to thewire-inlet opening.

9. A device for introducing a fragile wire into an internally-strainedlimited space by means of a stream 'of a gas, comprising a guide tubefor the wire'and for the gas, said tube having inlet openings for thewi're and for the gas and en outlet opening for both the wireand thegas, said inlet openings being spaced back from said outlet opening,means to supply the wire to the wire-inlet opening. and means to supplythe gas to the gas-inlet opening, the openings in the tube being soformed that the rate of iiow of the gas is reduced before anduponleaving the tube.

10. A device for introducing a fragile wire into a limited space bymeans of a stream of a gas, comprising av guide tube for the wire andfor the Sas and having a. common outlet opening for the gas and wire,means to produce a flow oi' the gas through said tube toward the outletopening, and means to supply the wire to the tube including means tointernally strain the wire.

11. A device for introducing a fragile wire into a limitedspace by meansoi' a gas, comprising a. guide tube for the wire and for the gas. saidtube having inlet openings for the wire and for the f gas and an outletopening for both the wire and the gas, means'to supply the wire to thewire'- inlet opening, and means to produce a iiow of the gas from thegas-inlet opening to the outlet opening including a devicev forcontrolling the ilow of the gas to the tube, said deviceA being sointerconnected with said Wire-supplying means that the iiow of the gasis initiated before the supply oiwire starts, and is terminated after.

the supply of wire ceases.

CORNELIS KORVER..

Disclaimer l 2,115,423.-Uom'els Korver, Eindhoven, Netherlands. METHODAND DEVICE non TRANsPoRTING WIRES.

Patent dated Apr. 26, 1938. Disclaimer filed June 9, 1950, by theassignee, Hartford National Baak and Trust Company.

Hereb makes dsclaimerof claims 1, 3, 4, 7,'8, 9, 10,

[ Gazette July 4, 1.950.]

and 11 of said patent.

.tube toward the outlet opening, and means to `supply the wire to thewire-inlet opening.

9. A device for introducing a fragile wire into an internally-strainedlimited space by means of a stream 'of a gas, comprising a guide tubefor the wire'and for the gas, said tube having inlet openings for thewi're and for the gas and en outlet opening for both the wireand thegas, said inlet openings being spaced back from said outlet opening,means to supply the wire to the wire-inlet opening. and means to supplythe gas to the gas-inlet opening, the openings in the tube being soformed that the rate of iiow of the gas is reduced before anduponleaving the tube.

10. A device for introducing a fragile wire into a limited space bymeans of a stream of a gas, comprising av guide tube for the wire andfor the Sas and having a. common outlet opening for the gas and wire,means to produce a flow oi' the gas through said tube toward the outletopening, and means to supply the wire to the tube including means tointernally strain the wire.

11. A device for introducing a fragile wire into a limitedspace by meansoi' a gas, comprising a. guide tube for the wire and for the gas. saidtube having inlet openings for the wire and for the f gas and an outletopening for both the wire and the gas, means'to supply the wire to thewire'- inlet opening, and means to produce a iiow of the gas from thegas-inlet opening to the outlet opening including a devicev forcontrolling the ilow of the gas to the tube, said deviceA being sointerconnected with said Wire-supplying means that the iiow of the gasis initiated before the supply oiwire starts, and is terminated after.

the supply of wire ceases.

CORNELIS KORVER..

Disclaimer l 2,115,423.-Uom'els Korver, Eindhoven, Netherlands. METHODAND DEVICE non TRANsPoRTING WIRES.

Patent dated Apr. 26, 1938. Disclaimer filed June 9, 1950, by theassignee, Hartford National Baak and Trust Company.

Hereb makes dsclaimerof claims 1, 3, 4, 7,'8, 9, 10,

[ Gazette July 4, 1.950.]

and 11 of said patent.

